green coffee lot cards can be intimidating, with terms like processing methods and cupping scores. let's break down these elements for a clearer insight.
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ever been handed a green coffee lot card and just stared at it like it was written in ancient script? you're not alone. at la cabra in east village, i overheard a roaster raving about a microlot from finca el salitre. it wasn't just the complex anaerobic process they were buzzing about, it was the card itself. each line on that card tells a story: farm origin, precise processing method, and, of course, the coveted cupping score. knowing how to decipher these cryptic details can turn a good roast into something truly special. let's break it down.
the first thing you see on most lot cards is a place name. sometimes two. and the difference between them matters more than people realise.
a farm name like finca el salitre tells you the coffee came from a single, identifiable piece of land, one producer or family managing everything from planting to harvest. that traceability is worth something, both for quality control and for the story you tell when you put it on a menu. a mill name, on the other hand, refers to the place where the cherry gets processed after picking. these are two separate operations and they don't always sit on the same property.
according to crema coffee roasters, if the producer is a single person or family, you'll typically see a farm name where all the coffee in that lot originates. but when coffee comes from a co-op or a collective of smallholders, you'll often see the washing station or mill listed instead, because no single farm produced enough to fill the lot alone. neither is better or worse. they're just different supply chain structures, and you need to know which one you're looking at.
altitude also appears here, either as a single number or a range. coffee grown above 1,500 metres tends to develop more slowly, producing denser beans with higher acidity and complexity. a range, say 1,600 to 1,900 masl, usually means the lot was aggregated from several plots on a hillside rather than a flat single estate. note it down. it affects how you'll roast.
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grades are shorthand for physical quality. not flavour. physical quality.
the grading system varies by country (ethiopia uses grade 1 through 5, kenya uses aa/ab/c by screen size, central american origins often use shb, meaning strictly hard bean), but the underlying logic is consistent: the grade tells you what isn't in the bag. defects, undersized beans, foreign material, off-colour seeds.
the sca's specialty protocol is the most widely cited standard. under it, specialty grade requires fewer than 5 full defects per 300g sample with zero primary defects. primary defects are the bad ones: full black beans, full sours, fungus-damaged beans, foreign matter. secondary defects (partial blacks, small stones, husks) are less damaging but still counted.
here is the thing about defects: they're not just cosmetic. a black bean is typically the result of over-fermentation or fruit contact left too long. a full sour bean went through uncontrolled fermentation and will taste exactly like that in the cup. as the espresso academy explains, each defect tells you something about the bean's journey, from agronomic conditions through to processing and storage.
but grades have a ceiling on what they can tell you. ict coffee puts it plainly: grade predicts quality, it doesn't guarantee flavour. a grade 1 ethiopian and a grade 1 colombian are both specialty, and they taste nothing alike. grade tells you what isn't in the bag. the cup score tells you what is. you need both numbers together.
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a cupping score is an 80-to-100 number generated by putting the coffee through a structured sensory evaluation, usually by a q grader working under sca cupping protocols. eighty points is the floor for specialty. everything below that is commercial grade.
the score itself is built from individual attributes: fragrance, aroma, flavour, aftertaste, acidity, body, balance, uniformity, clean cup, and overall. each gets marked. they add up. roasters who've sat through a cupping session know the drill: rows of identical white cups, ceramic spoons hitting the surface in that familiar wet-slap rhythm, the smell of the bloom rising before the timer even goes off.
scores in the 80 to 84 range are solidly specialty but approachable. eighty-five to 87 is where things get interesting for single-origin work. above 88, you're usually looking at a microlot with something genuinely unusual going on, whether that's an exceptional variety, a specific fermentation protocol, or a farm that has been doing the same thing meticulously for a decade.
one thing worth knowing: the score on the lot card was generated from a sample, usually at origin. it may have changed. green coffee ages. moisture shifts during shipping. some importers relist the original score; better ones note the regrading date. always ask.
and scores are subjective in the way that any sensory evaluation is. two q graders can score the same coffee two points apart without either being wrong. a skilled green buyer doesn't just accept the certificate of analysis. they blind-cup the sample again before committing to a full order.
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processing is where most of the flavour diverges. the lot card will name the method, and it matters enormously.
| processing method | what happens | typical flavour result | price tendency |
|---|---|---|---|
| washed (wet) | fruit removed before drying | clean, bright, higher acidity | standard to moderate |
| natural (dry) | dried whole with fruit intact | fruity, heavier body, lower acidity | moderate to high |
| honey | partial mucilage left on during drying | between washed and natural, sweetness-forward | moderate |
| anaerobic | fermented in sealed tanks, oxygen-excluded | intense, wine-like, experimental | high to very high |
| extended fermentation | controlled extended wet or dry ferment | layered, often floral or funky | high |
washed coffees from ethiopia tend to show jasmine and bergamot. the same farm's natural lot might read more like blueberry jam and dark fruit. neither is better. they're different tools. what the lot card is telling you is which set of flavour characteristics you're working with.
anaerobic and experimental processes have exploded in prevalence since around 2018. they command serious premiums. the efico pricing analysis of finca el salitre's anaerobic microlot showed fob prices substantially above the median for 82-84 point coffees, reflecting both the score (87.25) and the small lot size of just 10 bags. that's a useful real-world anchor when you're trying to figure out whether a price is reasonable.
the process also tells you something about risk. a heavily fermented coffee is the result of intentional choices, and those choices can go beautifully or badly. a washed coffee from a well-established washing station is generally more predictable cup to cup. neither approach is wrong. but you should know what you're buying.
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green coffee pricing is not arbitrary, though it can feel that way until you understand the structure behind it.
most specialty green is priced as a differential above the c-market, which is the commodity exchange benchmark for arabica futures. you'll see this expressed as something like "+180" or "+220," meaning that many us cents per pound above the c-market price at time of trade. the actual number moves. the differential is what you're negotiating.
here's how the main factors stack up:
the efico data on a gargary gutity washing station lot from ethiopia yirgacheffe (cupping score 85, 40 bags, crop 22/23) illustrates how the c-market's volatility makes direct comparison between origins genuinely tricky. the fob price for ethiopia was adjusted to the origin benchmark, not a global flat rate. if you're comparing prices from two different origins, you need two different reference baselines.
honestly, if a lot card shows a high score and a low price, ask why before you celebrate. it might be old stock. it might be a misgraded sample. it might be a legitimate deal. but it warrants a conversation with the importer.
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jarrah miller, who roasts for a small batch operation out of a converted railway arch near bermondsey street in london, has a rule about lot cards: "i don't trust a card with no grading date." her point is that the information is only as good as when it was gathered. a coffee graded at origin in october may have sat in a hamburg warehouse for six months before it lands on your table. the score is still valid as a reference, but the moisture content and density she measures on arrival are what actually shape her roast profile.
she also pays close attention to the producer line. "a co-op lot and a single-farm lot need different conversations," she says. with a co-op, she wants to know how many contributing farmers there are and whether the washing station has consistent quality control. with a named single farm, she's more likely to contact the importer for a direct relationship. the lot card is where that relationship starts.
one practical habit she's developed over the years: she files lot cards alongside her roast logs. that way, if a batch behaves strangely on the drum (a long first crack, unusual density readings, fast colour development), she can trace back to the physical assessment data and see if there was something predictive sitting on the card all along. often there is.
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a coa (certificate of analysis) is a formal document, often produced by a lab or certified grader, that records moisture content, water activity, defect count, screen size, and sometimes the cupping score. a lot card is a summary document, usually prepared by an importer or exporter, that compiles the most buyer-relevant information: origin, farm or mill, process, altitude, variety, grade, score, and price. they overlap but aren't the same thing. a lot card may reference the coa or simply reproduce its key figures.
not automatically. a coffee scoring 87 points with a heavy anaerobic profile might be genuinely remarkable but completely wrong for your espresso blend. cupping scores tell you about quality within a particular sensory frame. they don't tell you about roastability, consistency across bags, or how the coffee will behave on your specific machine and grinder setup. use the score as a starting filter, then cup for fit.
it depends on the origin. in ethiopia, grade 1 is the highest quality tier, with tight defect tolerances and generally strong cup scores. in other origins, grading systems differ entirely. sca specialty protocol sets a universal floor: fewer than 5 full defects per 300g, zero primary defects, and a minimum cup score of 80. "grade 1" on a lot card from a reliable importer should meet this threshold, but always verify against the actual defect count listed, not just the label.
the sca publishes an annual specialty transaction guide with price benchmarks by score range and lot size. that's your best public reference. beyond that, fob prices vary by origin, so compare ethiopia against ethiopia and costa rica against costa rica rather than across origins. if you're new to green buying, building a relationship with two or three reputable importers is more useful than hunting for the lowest price. consistent quality at a fair price beats a cheap lot that cups differently every bag.
ask. a good importer will have the full coa available and should be willing to share it. if the grading date is missing, ask when the physical assessment was done. if the process is listed as just "natural" without more detail, ask whether there was any fermentation stage and for how long. the lot card is a starting point for a conversation, not the end of one. roasters who treat it as final information often end up surprised on the cupping table.
next time you see a green coffee lot card, pause. consider the story behind each number and name. it's not just data, it's a narrative of hard work, climate, and choices made by coffee farmers. these cards are the bridge between the farm and your cup, offering clues to a brew's potential. respect the details and taste the journey.
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